Irradiating device



March 12, 1935.

0. FRITZE IRRADIATING DEVICE Filed May 3, 1935 INVENTOR I ATTORNEYPatented Mar. 12, 1935 UNITED STATES PATENT OFFICE Application May 3,

In German Electric Company, a corporation'oi New York 1933, Serial No.669,248 y June I, 1932 4 Claims. (cilia-1'11) The present inventionrelates to irradiating devices generally and more particularly theinvention relates to improvements in such devices.

.Sources oi. infra-redv radiation are now avail- 5 able on the market;such sources comprise a filament wound around a supporting body of heatinsulating material and a reflector for the infrared and visible lightradiations emitted bythe filament when heated to a proper temperature.

The object of the present invention is to incorporate a source ofdifferent radiations in such devices. Another object oi the invention isto provide an irradiating device wherein a single reflector directs andevenly distributes. infrared and ultra-violet radiations. A furtherobject or the invention is to provide an irradiating device emitting a'beam 01' light rich in visible, infra-red and ultra-violet lightradiations in which all of said radiations are commingled. Still furtherobjects and advantages attaching to the device and to its use andoperation will be apparent to those skilled in the art from thefollowing particular description and from the appended claims. as Inaccordance with these objects the invention comprises a hollow,conically shaped, supporting body oi! heat insulating material having afilament mounted on the external wall thereof and a gaseous electricdischarge lamp device 80 mounted in the interior thereof. Said filamentis adapted to emit infra-red radiations and said lamp device isadapted'to emit ultra-violet radiations when a suitable current flowsthrough said filament and said lamp device. The walls I of saidinsulating body have a plurality of windows therein to permit thepassage of the light radiations emitted by the discharge device. Saidlamp device and said filament are mounted in or about the focal point ofa reflector. The refiector collects the light radiations from saidfilament and said lamp device and sends out said radiations in a beam inwhich the visible, infrared and ultra-violet radiations are evenlydistributed and commingled. In the drawing accompanying and formingepart of this specification an embodiment oi! the invention is shown inFig. 1 in a side elevational partly sectional view and an element of theembodiment illustrated in Fig. 1 is shown in a side elevational view inFig. 2 but as such illustration is primarily for purposes of disclosureit will be understood of course that numerous substitutions,modifications and changes in the form and details i the device and inits use and operation 66 may be made by those skilled in the art withoutdeparting from the spirit and scope of the invention. 1

Referring to the drawing the new and novel irradiating device comprisesa parabolic reflector 1 having a socket 2. A conical shaped hollow body4 of heat insulating material having a base 3 is screwed into saidsocket 2. A coiled filament 5, adapted to/ emit infra-red radiationswhen heated to a proper temperature by the passage of a suitableelectric current therethrough, is

mounted on the outer wall of said body 4. Said filament consists ofNichrome' wire, forexample, obtainable under that name on the openmarket and consisting of an alloy of nickel and chromium. An electricdischarge lamp device 6 is mounted in the interior of said body 4. Saidlamp device 6 has a bent tubular container made of a material perviousto ultra-violet light, such as quartz, electrodes sealed therein at eachend thereof and a gaseous filling therein, such as a filling comprisingmercury vapor, which emits ultra-violet and visible light rays whenexcited by the passage of an electric discharge between said electrodes.The sloping walls of said body 4 have a plurality of windows 7 thereinand said lamp device 6 and said filament 5 are located in and. about thefocal point of said parabolic refiector l. The light emitted by saidlamp device 6 as well as said filament 5 falls on the surface of saidreflector 1 and is directed thereby in a beam of parallel rays in whichinfra-red, ultra-violet and visible light radiations are evenlydistributed and commingled. The new and novel irradiating device isuseful for many purposes and particularly for therapeutic purposes. Aconvex metal disk 8 having windows 9 therein is mounted on the exteriorend of said body 4 to permit the passage of the light radiations emittedby said ultra-violet generator 6 in the same direction in which theradiations are directed by said refiector 1. The filament 5 is, whendesired, connected in series with the lamp 6 to act as a ballastresistance therefor. The coiled filament 5 is not wound around the body4, in which case it would obstruct the passage of the light emitted bysaid lamp 6 through the windows 7, but is led back and forth over' theouter wall of said body 4 located between the windows 7. The filament 5is thus physically separated into panels with a window '7 between eachpanel, butthe panels are electrically connected in series. -The openings'7 and 9 also serve as ventilators iorthe lamp device 6 which isdesirable to prevent the temperature of the lamp 6 from going above theoperating temperature thereof. A current supply lead connected to asuitable source of current is led, through the tube 10in the rear' ofsaid socket '2 and is connected to contacts in said socket 12. It willbe understood, of course, that said reflector 1 is mounted on a supportwhich is adjustable as to height and direction, )or not as desired. r I

What I claim as new and desire to secure by Letters Patent of the UnitedStates, is:-

1. An irradiating device comprising in combination, a reflector havingasocket therein and a hollow, supporting insulating body adapted to screwinto said socket, an'infra-red ray emitting metal filament mounted onthe external wall of said body, an electric discharge ultra-violetgenerator mounted in the interior of said body, the side walls of saidbody being perforated, the light rays and the heat from said generatorpassing through the perforatedwalls of said insulating body, saidreflector collecting and projecting the light rays emitted by saidfilament and said generator in a beam in which said rays are evenlydistributed and commingled said filament being mounted between theperforations of said supporting body.

2. an irradiating device comprising in combirays in which said rays areevenly distributed and commingled, said filament being mounted betweenthe perforations of said supporting body.

3. An irradiating device comprising in combination, a reflector having asocket therein and a conically shaped, hollow body of insulatingmaterial adapted to screw into said socket, the walls of said body beingperforated, an infra-red ray emitting metal filament mounted on theexternal wall of said body and between said perforations, a gaseouselectric discharge ultra-violet generator mounted in the interior ofsaid body, said generator comprising abontainer, electrodes sealedtherein and a gaseous atmosphere therein, the light rays and the heatfrom said generator passing through the perforated walls of said body,said reflector collecting and projecting the light rays emitted by saidfilament and said generator in a beam of parallel rays in which saidrays are evenly distributed and commingled.

4. An irradiating device comprising in combination, a reflector having-asocket therein and a conically shaped, hollow body of insulatingmaterial adapted to screw into said socket, the walls of said body beingperforated,a perforated cap at one end of said body, an infra-red rayemitting metal filament mounted on the external wall of said body andbetween said perforations, a gaseous electric discharge ultra-violetgenerator mounted in the interior of said body, said generatorcomprising a container, electrodes sealed therein and a gaseousatmosphere therein, the light rays and .the heat from said generatorpassing through the perforated walls of said body, said reflectorcollecting and projecting the light rays emitted by said filament andsaid generator in a beam of parallel rays in which said rays are evenlydistributed and commingled.

